Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,170
This is totally normal for Iberia. It's about money laundering regulations and ensuring that you are the person entitled to the money.
I don't have the whole communication trail, but it looks to me like you expressed concerns about email security, and the agents have pointed you towards communication channels that you might believe to be more secure.